Gabriella is deciding between two landscaping companies for her place of business. Company A charges $45 per hour and a $275 equipment fee. Company B charges $65 per hour and a $175 equipment fee. Let AA represent the amount Company A would charge for tt hours of landscaping, and let BB represent the amount Company B would charge for tt hours of landscaping. Write an equation for each situation, in terms of t, t, and determine which company would be cheaper if Gabriella needs 3 hours of landscaping.